August 14, 1909 



HORTICULTUKE. 



257 



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A 



The Perfection of Up-to-Date 

 Greenhouse Heating Science 



AUTOMATIC HOT WATER CIRCULATOR 



The Castle System of forced circulation of hot water for greenhouse heating is the only one that has 

 demonstrated its practicability, economy and perfection of action. It works while you sleep and if any- 

 thing should happen to put your forced circulation out of commission, this device takes up its work auto- 

 matically. It's use increases the efficiency of your heating plant but reduces the expense. 



Don't contract for any other device represented to be "just as good," etc., until you have first care- 

 fully investigated and ascertained what the Automatic does. 



THE CASTLE BOILER 



Lower values for your product means closer operation of your greenhouses. You must have greatest 

 efficiency with the least expense. 



The Castle Boiler is the best hot water heater for greenhouses on the market today. It insures great 

 economy in first cost, reliability, and above all, in expense of operation. This will appeal to the good 

 business judgment of anyone contemplating new construction or remodeling the old' plant. Don't build 

 a greenhouse or remodel the old plant without securing complete information regarding the Castle Boiler. 



V 



Sectional View. 



